Date Region Description Price Seller
USAGreat overdrive, box included ![Mad Professor Royal Bl...$120.00
UKIf you like Matt Schofield or low gain drives for blues...$177.12
USAWorks properly. ![Mad Professor Royal Blue Overdrive]...$142.00
USAMint condition Velcro Original box in good condition ...$180.00
Japan[Product Description]The Mad Professor Royal Blue Overd...$222.87
Japan[Product Description]The Royal Blue Overdrive by MAD PR...$223.01
USAMad Professor Royal Blue Pedal Mint Condition. Mint c...$132.50
UKHere's my Mad Professor Royal Blue Overdrive, couple of...$153.80
EUThe Royal Blue is a boutique overdrive pedal designed i...$170.01
USAVelcro ![Mad Professor Royal Blue Overdrive](https://...$90.00